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-
- /* Support for dynamic loading of extension modules */
-
- #include "Python.h"
- #include "importdl.h"
-
- #include <sys/types.h>
- #include <sys/stat.h>
- #if defined(__NetBSD__) && (NetBSD < 199712)
- #include <nlist.h>
- #include <link.h>
- #define dlerror() "error in dynamic linking"
- #else
- #ifdef HAVE_DLFCN_H
- #include <dlfcn.h>
- #endif
- #endif
-
- #ifndef RTLD_LAZY
- #define RTLD_LAZY 1
- #endif
-
-
- const struct filedescr _PyImport_DynLoadFiletab[] = {
- #ifdef __CYGWIN__
- {".pyd", "rb", C_EXTENSION},
- {".dll", "rb", C_EXTENSION},
- #else
- {".so", "rb", C_EXTENSION},
- {"module.so", "rb", C_EXTENSION},
- #endif
- {0, 0}
- };
-
- static struct {
- dev_t dev;
- ino_t ino;
- void *handle;
- } handles[128];
- static int nhandles = 0;
-
-
- dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
- const char *pathname, FILE *fp)
- {
- dl_funcptr p;
- void *handle;
- char funcname[258];
- char pathbuf[260];
-
- if (strchr(pathname, '/') == NULL) {
- /* Prefix bare filename with "./" */
- sprintf(pathbuf, "./%-.255s", pathname);
- pathname = pathbuf;
- }
-
- /* ### should there be a leading underscore for some platforms? */
- sprintf(funcname, "init%.200s", shortname);
-
- if (fp != NULL) {
- int i;
- struct stat statb;
- fstat(fileno(fp), &statb);
- for (i = 0; i < nhandles; i++) {
- if (statb.st_dev == handles[i].dev &&
- statb.st_ino == handles[i].ino) {
- p = (dl_funcptr) dlsym(handles[i].handle,
- funcname);
- return p;
- }
- }
- if (nhandles < 128) {
- handles[nhandles].dev = statb.st_dev;
- handles[nhandles].ino = statb.st_ino;
- }
- }
-
- #ifdef RTLD_NOW
- /* RTLD_NOW: resolve externals now
- (i.e. core dump now if some are missing) */
- handle = dlopen(pathname, RTLD_NOW);
- #else
- if (Py_VerboseFlag)
- printf("dlopen(\"%s\", %d);\n", pathname,
- RTLD_LAZY);
- handle = dlopen(pathname, RTLD_LAZY);
- #endif /* RTLD_NOW */
- if (handle == NULL) {
- PyErr_SetString(PyExc_ImportError, dlerror());
- return NULL;
- }
- if (fp != NULL && nhandles < 128)
- handles[nhandles++].handle = handle;
- p = (dl_funcptr) dlsym(handle, funcname);
- return p;
- }
-